Flavius j



NTTED STATES PATENT OrricrJo FLAVIUS J. UNDERWOOD, O F NORTHSPRINGFIELD, MISSOURI.i K

SPECIFICATION forming part of Letters Patent No. 290,148, dated December11, 1883. I

Application med January 29', 1,883. (No moda.)

To a/ZZ whom mcty concern.-

grooves in the eyes receiving ribs on the boxes.

Beitknownthatl,FLAvIUslUNDERWooD, `(See Figs. 4 and 5.) The inner endsof the of North Springfield, in the county of- Green and State ofMissouri, have invented a certain new and useful Improvement in RotaryGolters, of which the following is afull, clear, and exact description,reference being had to the accompanying drawings, forming part of thisspecification, and in which- Figure 1 is a side View; Fig. 2, a frontView, being an edgeview of the cutter. Fig. 3r is a vertical section.Fig. 4 is an enlarged view of one of the eyes of the yoke` showing thegrooves for receiving the ribs on the journalbox; and Fig. 5 is asimilar view, showing the box in place.

M y invention relates to a rotary colter em- .bodying a blade or cutter,which is journaled or socket, E3, of the disk E.

to a frame or yoke, the frame or yoke being secured to the beam of theplow by suitable nl eans; and my invention consists in the manner ofconnecting the blade and yoke, as fully described and claimedhereinafter.

Referring to the drawings, A represents the blade or cutter; B, theyoke, and D a standard for connecting the yoke with the plow-beam. y

E E represent disks, between which the blade is clamped, that E having acentral inwardly-eXtending projection,'E`l, over which the blade iitstightly, and which reaches through the blade, entering tightly a cavityThis projection E is preferably made tapering, and the socket E3correspondingly tapering, so that when the parts are pressed togetherthey will remain lin that position without otherwise being fastened,`until they are put in the frame or yoke, this beingan assistance inputting the parts of the colter together and holding the blade inposition. The disks have central openings or holes, as shown, throughwhich the connecting-bolt I passes.

F Fv represent journalblocks, which fit againstthe disks, and which haveflanges F2 upon their inner ends, respectively, and they fit intojournal-boxes H H, having anges H2 H2, which are secured in the eyes B Bof the yoke and held from turning therein by journal-boxes fit snuglyagainst the flanges of the journal-blocks, orthere may be a slight playbetween them,' as shown'. The inner part of the flanges of the blocksare preferably tapered off, as shown, forming V-grooves E4 E4 betweenthem andk the disks, which receive any dirt'falling from the blade,keeping it from the journals. The blocks have central openings toreceive the connecting-bolt I, and their outer ends extend somewhatbeyond the eyes ofthe yoke, as shown. so that when the connecting-boltis put iu place and tightened up the boxes will not be pressed betweenthe head and washer of the bolt and the Iianges of the j ournal-blocks,for then the blocks could not turn freely between them. Theconnectingboltis provided with a washer and nut at one end, as shown,and a head on the other end. The blade,disks, journal-blocks, andconnecting-bolt are supposed to turn together, the journal-blocksturning in the j ournal-boxes, as stated. The journal-boxes maybe madeof any suitable material-as, for instance, composition,wood, metal, orrawhide; or they may be made from a self lubricating material-as, forinstance. vulcanized fiber. The construction described is intended forthe solid forked yoke;

but when the yoke is adjustable each disk may have its journal in 'onepiece, with it, as Well as the iiange forming the V -shaped groove.

It is quite an advantage to Ahave the disks and" having rib-andgrooveconnection, and the eyes being received between the flanges of thejournals and boxes, as set forth.

FLAVIUS J. UN DERWOOD. Attest:v

HENRY C. YOUNG, SEWARD A. HAsEL'rINE.

